Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Income Tax Disclosure [Abstract]
Expected benefit at federal statutory rate	$ (40,119)	$ (11,628)	$ (14,489)
State tax expense—net of federal benefit	310	286	113
Impact of foreign operations	770	(299)	85
Federal research and development credit	(1,109)	(694)	(530)
Change in valuation allowance	59,450	30,587	14,837
Stock-based compensation	(19,152)	(17,667)	(23)
Meals and entertainment	50	35	242
Other permanent items	589	84	145
Provision for income taxes	$ 789	$ 704	$ 380

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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